they only ask you to turn the blinks on and check the brake lights.
I don't think they want to stand behind the car as you put the car in reverse for them to check. What if you are a horrible drive and let go of the brake.
But I'm not your best guide. I've took it 5 years ago and the dmv that day was running 2 hours behind, I drove around the block, 5 minutes and they gave me my license.